Introduction: :
Introduction: Are we hotter when we wear a dark shirt or a light shirt? Is it hotter in the city or in the country? Why are the world’s plants mostly green? Well, you may already have the answers to some of these, or you may not. Different colors absorb different amounts of heat from the sun. Our experiment shows which color absorbs the most radiant solar heat.
Problem: :
Problem: Which color absorbs the most radiant solar heat?
Hypothesis: :
Hypothesis: The color black absorbs the most radiant solar heat.
Materials: :
Materials: 5 pieces colored felt (red, white, green, yellow, black)
10 rubber bands
5 thermometers
& 1 bright Sun
Procedure: :
Procedure: Recorded temperature from each thermometer prior to sun exposure – beginning temperature.
Wrapped one piece of colored felt around the base of each thermometer: held w/rubber bands.
Set the 5 prepared thermometers in the sun.
Recorded temperature from each thermometer after 10 minutes – ending temperature.
Subtracted the beginning temperature from the ending temperature – amount temperature rose.
Averaged all five sets of data for most accurate results.
Data: :
Data:
Conclusion: :
Conclusion: Black did, in fact, absorb the most radiant solar heat as my hypothesis stated. I would like to note, though, that green absorbed the second highest amount of radiant solar heat. This is very interesting considering that most of the earth’s vegetation is green due to chlorophyll, the pigment plants use to absorb solar energy to make food. The next time I perform this experiment, I will eliminate white and black and add more colors from the rainbow.
Slide 9:
Park, In Ja
Lee, Young Min
Shin, Hee Jin
Dorothy Holmes
Daniel Grace
Curtis Inouye
Robert McElroy
Walter Carlson
and
Pam Brinkhaus I would like to give special thanks to: